#!/usr/bin/python
# -*- coding: UTF-8 -*-
# 例2：elif用法

num = 5
if num == 3:    # 判断num的值
    print 'boss'
elif num == 2:
    print 'user'
elif num == 1:
    print 'worker'
elif num < 0:   # 值为小于0时输出
    print 'error'
else:
    print 'roadman'     # 条件均不成立时输出


